package TestDemo;

import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

public class TestDemo4 {
    public static void main(String[] args) {
        //ExecutorService threadPool = Executors.newFixedThreadPool(10); // 创建一个线程池, 里面有十个线程.
        String s1 = "hello";
        String s2 = "hel" + new String("lo");
        System.out.println(s1 == s2);
    }
}
